Executive brief
Oracle Helidon is a lightweight web server framework used in enterprise Java applications. An unauthenticated attacker on the network can exploit a difficult-to-exploit vulnerability in Helidon versions 3.0.0 through 3.2.17 via HTTP to gain unauthorized access to sensitive data. This vulnerability may have cross-product impact beyond Helidon itself, potentially exposing critical business data across Oracle Fusion Middleware deployments.
Technical details
This is a difficult-to-exploit vulnerability in Oracle Helidon's Imperative Web Server component affecting versions 3.0.0 through 3.2.17. An unauthenticated attacker with network access via HTTP can trigger the vulnerability without requiring user interaction (UI:N) or authentication (PR:N), though it has a high attack complexity (AC:H) indicating specialized conditions or knowledge are required. Successful exploitation results in unauthorized access to critical data or complete confidentiality compromise of Helidon-accessible data (C:H). The vulnerability has scope change (S:C), indicating potential impact on other Oracle Fusion Middleware components beyond Helidon itself. Patches should be available through Oracle's security advisory updates.
Affected products
- Oracle Helidon 3.0.0 through 3.2.17
Timeline
- 2026-08-18: disclosed